Capital Gains on an Investment Property: What Ontario Owners Actually Pay

When you sell an investment property in Canada, half of your gain is taxable. That half gets added to your income for the year and taxed at your marginal rate, which in Ontario tops out at 53.53 percent. Run those two facts together and the highest anyone pays on a capital gain in this province in 2026 is 26.76 percent of the gain. Most people pay considerably less than that. The number that trips owners up is not the rate, it is everything that happens before you get to it.

Before you can plan the tax, you need a defensible number for what the property is worth today. Start with a free home valuation and we will give you a range with the comparable sales behind it.

The formula, in one line

Proceeds of disposition, minus selling costs, minus your adjusted cost base, equals your capital gain. Half of that is your taxable capital gain. That amount goes on line 12700 of your return and is taxed like any other income at whatever bracket it lands in.

One piece of housekeeping first. The proposed increase in the inclusion rate from one half to two thirds, the one that was going to start on January 1, 2026, was cancelled by the Department of Finance in March 2025 and never took effect. The inclusion rate for 2026 is one half. If you are working from advice written in 2024, throw it out.

Adjusted cost base is where the money is

Your adjusted cost base, or ACB, is not what you paid. It is what you paid plus the costs of acquiring it plus every capital improvement you made along the way. Land transfer tax on the purchase, legal fees on the purchase, and the cost of a new kitchen, new windows, a new roof or a finished basement all go in. Painting, a dishwasher replacement and annual repairs do not, because those are current expenses you already deducted against rent.

Every dollar you can properly add to ACB reduces the gain by a dollar and reduces the tax by roughly 22 cents at a typical Ontario income. That makes the shoebox of receipts you kept from 2017 worth real money. If you did not keep them, this is the point in the process where owners discover what unkept records cost.

A worked example

Illustrative numbers, not a market forecast. A condo bought in 2016 for $450,000, with $12,500 of land transfer tax and legal fees on the way in, and an $18,000 kitchen renovation in 2019. Sold in 2026 for $600,000 with $25,000 of commission, legal and staging costs. The owner has $120,000 of other income and never claimed capital cost allowance.

Rates are combined federal and Ontario marginal rates for 2026 including surtaxes, retrieved August 22, 2026. The Ontario Health Premium is excluded. This is an illustration, not tax advice.

Here is the same result as a picture, because the split surprises people who assumed a top-rate horror story.

If you own a rental and you are running the numbers, these three go together:

• The Principal Residence Exemption: What It Covers and Where People Lose It
• Holding a Rental Property in a Corporation: The Real Pros and Cons
• Is the Smart Money Back? What a 5 Percent Cap Rate on a Toronto Condo Actually Means

Your rate depends on where the gain lands, not where your income sits

A capital gain stacks on top of your other income, so a large one can push you through two or three brackets on its way up. That is why the example above uses two rates rather than one. Here is the 2026 ladder for Ontario.

Combined federal and Ontario 2026 marginal rates including surtaxes, retrieved August 22, 2026. Some narrow bands between $53,891 and $117,045 are omitted for readability.

There is a planning consequence buried in that ladder. Selling in a year when your employment income is low, or splitting a two property disposal across two calendar years, can move a chunk of gain down a bracket or two. That is not aggressive tax planning, it is just timing, and it is the sort of thing worth deciding in October rather than in April.

Where the bill gets bigger than people expect

Three places, mostly.

Capital cost allowance recapture. If you depreciated the building against your rental income over the years, the Canada Revenue Agency takes that deduction back when you sell, and recapture is fully taxable, not half taxable. In effect, a dollar of CCA you claimed at a 45 percent rate costs you roughly twice as much on the way out as a dollar of capital gain does. CCA is a deferral, not a discount, and the deferral has a price.

The flipping rule. Since January 1, 2023, a residential property owned for fewer than 365 consecutive days is deemed to produce business income, not a capital gain. The whole gain is taxable rather than half, the principal residence exemption is unavailable, and there is no tolerance period. Assignment sales are caught too, because the definition of flipped property includes the right to acquire a housing unit. There are specific life event exceptions, including death, separation, disability and certain job relocations, and you have to claim them.

Bracket stacking. Covered above, but worth repeating because it is the most common surprise. Owners look up 26.76 percent, assume it applies, then find their actual bill is lower. Occasionally they find the opposite, when a large gain vaults them from a middle bracket to the top one.

The change of use trap

When a property changes from personal use to income producing use, or the reverse, the tax rules treat you as having sold it at fair market value that day and immediately bought it back, even though no money moved. That deemed disposition can create a tax bill on a property still sitting in your name.

Two elections soften it. A subsection 45(2) election, filed in writing with your return for the year of the change, lets you treat a property you have moved out of and rented as still being your principal residence for up to four more years, provided you do not claim CCA on it and do not designate another property as your principal residence for the same years. A subsection 45(3) election runs the other way, for a rental you move into. These are not automatic and the CRA does not remind you. Missing the filing year is the classic error.

If you are selling as a non-resident

The mechanics change entirely. The buyer is required to withhold a percentage of the gross sale price until you produce a clearance certificate from the CRA under section 116, and the process takes months, not days. A non-resident sale that gets listed without that process already started is a closing problem waiting to happen. Start it before you sign a listing agreement.

What would change any of this

The inclusion rate is a policy variable, and it has already been raised, deferred and cancelled inside two years. A future government could revisit it. If you are holding a property with a large unrealized gain, the risk that the taxable share of that gain rises is a real risk to price in, and the argument on both sides is straightforward: acting early crystallizes a tax bill you might never have owed, while waiting exposes you to a rule change you cannot control. Neither is obviously right. The size of the unrealized gain relative to your other assets usually decides it.

One more caveat that matters. We are brokers, not accountants. Everything above is how the rules generally work, and the numbers are current as of August 22, 2026, but the way they apply to your ownership history, your elections and your other income is a conversation for a CPA. Have it before you list, not after you sell.

If you are deciding whether to sell a rental this year or next, the tax answer and the market answer have to be solved together. Book a call and we will price the property, model what the sale looks like at each timing, and tell you which one we would run if it were ours. Sometimes that answer is to hold. Get in touch here.

Dave Dubbin
Real Estate Expert
Dave Dubbin & Associates
Real Estate Broker for Etobicoke and Toronto Sotheby's International Realty, Canada